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Yesterday, 21:16

Suppose a representative at car care service center receives a phone call every 4 minutes on average. Find the probability that she receives 4 phone calls in 20 minutes (round off to third decimal place).

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  1. Yesterday, 21:23
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    Probability she receives call 4times is 0.8

    Step-by-step explanation:

    Total outcome = 5 since 20min : 4min is 5

    Expected outcome is 4

    Hence probability = expected outcome : total outcome

    Probability = 4/5 = 0.8
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